Syringoma and flat warts are two completely different diseases with significant differences. First, syringoma is a type of hamartoma and belongs to tumors, while flat warts are skin diseases caused by viral infections. Secondly, syringomas often appear symmetrically, primarily around the eyes or on the forehead, and are accompanied by itching symptoms. On the other hand, flat warts usually do not have a symmetrical distribution; they are scattered or densely distributed, and generally do not exhibit itching symptoms.